<template>
    <div id="particles-js" class="login-container">
      <el-form
        ref="loginForm"
        :model="loginForm"
        :rules="loginRules"
        class="login-form"
        auto-complete="on"
        label-position="left"
      >
        <h3 class="title">博客后台管理系统</h3>
        <el-form-item prop="username">
          <span class="svg-container svg-container_login">
            <svg-icon icon-class="user" />
          </span>
          <el-input
            v-model="loginForm.username"
            name="username"
            type="text"
            auto-complete="on"
            placeholder="username"
          />
        </el-form-item>
        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input
            :type="pwdType"
            v-model="loginForm.password"
            name="password"
            auto-complete="on"
            placeholder="password"
            @keyup.enter.native="handleLogin"
          />
          <span class="show-pwd" @click="showPwd">
            <svg-icon icon-class="eye" />
          </span>
        </el-form-item>
        <el-form-item>
          <el-button
            :loading="loading"
            type="primary"
            style="width:100%;"
            @click.native.prevent="handleLogin"
          >登 录</el-button>
        </el-form-item>
      </el-form>
    </div>
</template>

<script>
import { isvalidUsername } from "@/utils/validate";
import particlesJs from "particles.js";
import particlesConfig from "./particles.json";

export default {
  name: "Login",
  data() {
    const validateUsername = (rule, value, callback) => {
      callback();
      // if (!isvalidUsername(value)) {
      //   callback(new Error('请输入正确的用户名'))
      // } else {
      //   callback()
      // }
    };
    const validatePass = (rule, value, callback) => {
      if (value.length < 5) {
        callback(new Error("密码不能小于5位"));
      } else {
        callback();
      }
    };
    return {
      loginForm: {
        username: "",
        password: ""
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", validator: validateUsername }
        ],
        password: [{ required: true, trigger: "blur", validator: validatePass }]
      },
      loading: false,
      pwdType: "password",
      redirect: undefined
    };
  },
   mounted() {
    this.init();
  },
  watch: {
     
  },
  methods: {
    init() {
      particlesJS("particles-js", particlesConfig);
      document.body.style.overflow = "hidden";
    },
    showPwd() {
      if (this.pwdType === "password") {
        this.pwdType = "";
      } else {
        this.pwdType = "password";
      }
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true;
          this.$store
            .dispatch("Login", this.loginForm)
            .then(response => {
              if (response.code == "success") {
                this.$router.push({ path: this.redirect || "/" });
              } else {
                this.$message.error(response.data);
              }
              this.loading = false;
            })
            .catch(() => {
              this.loading = false;
            });
        } else {
          console.log("error submit!!");
          return false;
        }
      });
    }
  }
};
</script>

<style rel="stylesheet/scss" lang="scss">
$bg: #2d3a4b;
$light_gray: #eee;

/* reset element-ui css */
.login-container {
  position: relative;
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;
    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      &:-webkit-autofill {
        -webkit-box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: #fff !important;
      }
    }
  }
  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style rel="stylesheet/scss" lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;
.login-container {
  position: fixed;
  height: 100%;
  width: 100%;
  background-color: $bg;
  .login-form {
    position: absolute;
    left: 0;
    right: 0;
    width: 520px;
    max-width: 100%;
    padding: 35px 35px 15px 35px;
    margin: 120px auto;
  }
  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;
    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }
  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
    &_login {
      font-size: 20px;
    }
  }
  .title {
    font-size: 40px;
    font-family: "微软雅黑";
    color: $light_gray;
    margin: 0px auto 40px auto;
    text-align: center;
    font-weight: normal;
  }
  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
